Figure 3From: An investigation of the resolution of inflammation (catabasis) in COPDIndividual and mean (bars) values of HGF, PPARγ, TGFβ, VEGF and MMP9 gene expression in lung tissue specimens, in patients with COPD, smokers with normal spirometry and non-smokers. (S = current smokers; EX-S = former smokers; NS = non-smokers) ** p < 0.01. For further explanations, see text.Back to article page